洞口 dòngkǒu cave mouth Origin Definitions Defs Strokes Stroke Words Sentences Sents dòngkǒu cave mouth 洞 dòng noun hole hole; cavity; cave口 kǒu noun opening mouth of a container or general objectdòngkǒu Dongkou 洞 dòng noun hole hole; cavity; cave口 kǒu noun gateway entrance, exit, or pass, such as a mountain pass, port, or gate in the Great Wall